Since you work in cyber security, you must know how to examine the full header of the emails to determine their true source and authenticity. You might find that the info has been spoofed. If not, you need to report this directly to Dogster HQ by using the Contact link found at the bottom of every page.

Same thing happened to me. Rascol IF you do follow the email thread to the comment, you WILL find it IS in your diary, but it is buried way back in an entry from long ago, in my case some were entries I had made two or three years ago!
I did forward all comments to HQ and they made them go away, and ultimately they stopped.
Some of the links were to extremely sexual pages which was terribly annoying!

We have been receiving comments such as you are for over a month, possibly staring in early October. TDogster Watchdogs are excellent about removing the Spam, as it is different names posting it - 2 of the comments were scary - "hello, goodbye now" - and that freaked us. Watchdog emails us - we copy the diary entries and send back to them and they delete.

Nothing, no website, is safe from Spam - and having things 'invade' a private place, for lack of a better phrase, unfortunately.

Sadly, it is on Rocky, our precious Angel's page, and that gives us a chill.